Modular plane



FIG. 1 is a front perspective view of a modular plane;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear view elevation view thereof;

FIG. 4 is a left side elevation view thereof, the right side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The structural features depicted by broken lines have been shown for the purpose of illustrating portions of the modular plane that form no part of the claimed design. 

CLAIM The ornamental design for a modular plane, as shown and described. 